Help again please

Allie

x=4

Step-by-step explanation:

Allie, because you need to combine the x's in order to solve the equation.

You need to add -12x to 8x which equals 20x-19=61 then you need to add 19 to 61 which gives you 80. Now, your equation is 20x=80. Finally, you need to divide by 20 on both sides which gives you x=4.

y=x+9

?

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15